Gearing for mixing-machines.



C. T. ALEXANDER.

GEARING FOR MIXING MACHINES. APPLICATION FILED MAR. 13. 1916.

1,218,825. Patented Mar. 13, 1917.

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CHARLES T. ALEXANDER, 0F CHANUTE, KANSAS.

GEARING FOR MIXING-MACHINES.

Specification of Letters Patent.

Patented Mar. 13, 1917.

Application filed March 13, 1916. Serial No. 83,822.

To all whom it may concern:

Be it known that I, CHARLES T. ALEXAN- DER, a citizen of the United States, residing at Chanute, in the county of Neosho and State of Kansas, have invented a certain new and useful Improvement in Gearing for Mixing-Machines, of which the following is a specification.

My invention relates to improvements in gearing for mixing machines.

It relates particularly. to machines for beating eggs or for mixing cake batches.

The object of my invention is to provide a mixing machine adapted .to be operated -with any suitable motor, which is simple in construction, may be economically manufactured and not liable to get out of order, which provides novel means for varying the speed of the'beater without altering the speed of the motor, which permits the beater or operating tool to be manually swung in any direction, and which provides novel means for easily and quickly throwing the beater into or out of operation.

In the accompanying drawing which illustrates the preferred embodiment of my invention,

Figure 1 is a side elevation of my improved mixing machine, showing an egg whip or beater attached thereto.

Fig. 2 is a plan view of the same.

Fig. 3 is a sectional view of the universal joint mechanism and some of the parts connected therewith.

Fig. 4 is an enlarged longitudinal sectional view on the line 4-4 of Fig. 2.

Similar reference characters designate similar parts in the different views.

The motor may be of any suitable type, the one shown in the drawing being an ordinary electric motor 1 having the usual armature shaft 2 mounted in cylindrical bearings 3 at opposite sides of the motor bod 4 designates a swinging member having a bifurcated lower end pivoted on the bearings 3 and having attached to it, adjacent to its outer end, a coil spring 5 which is attached to an upright standard 6 having its lower end secured to the base of themotor 1.

Rotatable in bearings 7. carried by the member 4 is a longitudinal driven shaft 8, on which is splined a driven member preferably comprising a friction disk 9 having mounted on and secured to its periphery a ring 10 of rubber, leather or other suitable material, which is adapted to have driving engagement with the adjacent flat side of a driving member comprising a spur gear wheel .11 which mesheswith a spur gear wheel 12 secured to the armature shaft 2. The gear wheel 11 is secured to a horizontal shaft 13 rotatably mounted in the two arms of the swinging member 4 and disposed at right angles to the shaft 8.

The shaft 13 extends through and is rotatable in a sleeve 14 having a peripherally flanged inner end adapted to bear against an abutment comprising a collar 15 rigidly secured to the shaft 13.

Encircling the sleeve 14 is a coil spring 16, one end of which bears against one of the arms of the swinging member 4, and the other end of which bears against the peripheral flange 17 of the sleeve 14. The sleeve 14 is rotatably mounted and slidably movable in said arm and has secured to it at the outer side of the arm a cam lever 18 having a cam face 19 adapted to enter a re cess 20 provided in the outer end of a cam projection 21 with which the outer side of the adjacent arm of the member 4 is provided.

By swinging the cam lever 18 so that the cam face 19 is moved out of the recess 20, the sleeve 14 will be outwardly moved on the shaft 13 against the pressure ofthe spring 16, thereby relieving the collar 15 from the pressure of the sleeve 14, and thus releasing the gear wheel 11 from driving engagement with the driven member or disk 9.

Upon turning the lever 18 to the position shown in Fig. 2, the cam face'19 will enter the recess face 20, upon which the spring 16 will force the sleeve 14 inwardly into contact with the collar 15,thereby forcing the shaft 13 and gear wheel'll toward the shaft 8 into a position in which the gear wheel 11 will have driving engagement with the disk 9. j

In order that the disk 9 maybe radially adjusted, on the shaft 8, toward and from the axis of the gear wheel 11, so as to provide a variable transmission connection between the said gear wheel and the disk 9, the latter is splined to the shaft 8, so as to be slidable longitudinally thereon and rotatable therewith. For efiecting such sliding movement of thedisk 9, the hub of the latter is provided with a peripheral. groove 22, in which is mounted the bifurcated end of a member 23, which is rigidly secured to a rod 21, disposed parallel to the shaft 8 and longitudinally slidable in the two lower bearings 7 The upper end of the rod 24 is screw threaded and has mounted on said threaded portion two nuts 25 disposed respectively at opposite sides of and adapted to bear against the intermediate bearing 7. By adjusting the nuts 25, the rod 24 may be longitudinally adjusted, thereby, through the intermediacy of the member 23 longitudinally adjusting the disk 9 to the desiredposition on the shaft 8, suitable for obtaining the speed of rotation desired with reference to the driven shaft 8.

Rotatably mounted on the shaft 8 above the uppermost bearing 7 is a right-angled inember 26 having a tubular arm 2?, through which extends and in which is rotatably mounted a shaft 28, Fig. 3, on which is rotatably mounted one arm of a rightangled member 29, the other arm of which has rotatably mounted in it the upper end of a shaft 30, which has rotatably mounted on it a hand-hold 31.

The shaft 30 is adapted to have secured to its lower end a beater or whip 32 or such operating tool as may be desired for the particular purpose in view.

Rigidly secured respectively to the shafts 8 and 30, are two bevel gear wheels 33 and 3% which respectively mesh with two bevel gear wheels 35 and 36, which are secured to the shaft 28.

In the operation of my invention, the heater or other operating tool 32 having been attached to the shaft 30, the motor 1 is started into operation, thereby rotating the gear 11 through the intermediacy of the gear 12 and armature shaft 2. The lever 13 is then manually turned to the position shown in Fig. 2, in which the cam face 19 will bein the recess 20. The spring 16 will 1 then force the sleeve 14 against the collar 15, thus sliding the shaft 13 to a position in which the gear wheel 11 will have driving engagement with the disk 9. The latter will cause rotation of the shaft 8 at a speed dependent upon the position of the disk relative to the axis of the gear wheel 11. The nearer the disk is to the center of the wheel 11, the slower will be the speed of the shaft 8 and vice versa. Rotation of the shaft 8 will be transmitted to the shaft 30, by means of the gears 33 and 35, shaft 28 and gears 36 and '34.

The spring 5 will normally swing the member 1 to the inclined position shown in Fig. 1. The operator may, by grasping the hand hold 31, force said swinging member f downwardly to a position in which the beater may enter a bowl, or other vessel, not shown, which contains the eggs or batch to be operated upon by the beater.

The pivotal mounting of the members 26 and 29 on the shafts 8 and 28 respectively, provide a universal joint, which permits the operator to swing the rotating beater 32 in any direction desired. Upon the operator releasing the handle 31, the spring 5 will at once swing the member 4 upwardly, so as to lift the beater clear of the vessel in which it was operating.

When it is desired to stop the rotation of the beater 32, the operator swings the lever 18, so as to bring the cam face 19 out of the recess 20 and against the projecting outer edge of the projection 21, thereby sliding outwardly the sleeve 1% against the pressure of the spring 16 and out of engagement with the collar 15.

I do not limit my invention to the structure shown and described, as modifications, within the scope of the appended claims, may be made without departing from the spirit of my invention.

What I claim is 1. In a mixing machine, a support, a swinging member pivoted thereto, a driving shaft, a driven shaft rotatably mounted. on said member, variable speed transmission mechanism connecting the two shafts, a swinging support carried by said driven shaft, rotary means carried by said swing-- ing support and adapted to carry and rotate an operating tool, and means by which said rotary means is operated by said driven shaft.

2. In a mixing machine, a support, a swinging member pivoted thereto, a driven shaft rotatable on said member, a driven member rotatable with and longitudinally slidable on the driven shaft, driving'means including a rotary driving member movable into and out of engagement with the driven member, the latter being movable radially toward and from the axis of the driving member, a swinging support carried by the driven shaft, rotary means carried by said swinging support and adapted to carry and rotate an operating tool, and means by which said rotary means is operated by said driven shaft.

3. In a mixing machine, a support, a swinging member pivoted thereto, a driven shaft rotatable on said swinging member,a driven member rotatable with and longitudinally slidable on the driven shaft, a. driving shaft rotatably mounted on said swinging member, and longitudinally slidable toward and from the driven member, a driving member secured to the driving shaft and movable into and out ofengagement with the driven member, the latter being movable radially toward and from the axis of the driving member, and means operated by the driven shaft for carrying and rotating an operating tool.

4. In a mixing machine, a support, a

swinging member pivoted thereto, a driven shaft rotatable on said member, means actuated by the driven shaft adapted to carry and rotate an operating tool, a driven member rotatable with'and longitudinally slidable on said driven shaft, means carried by said swinging 'member for adjusting the driven member longitudinally on the driven shaft, anda rotary driving member adapted to engage and rotate said driven member, the latter being radially adjustable relatively to the axis of said driving member.

5. In a mixing machine, a support, a swinging member pivoted thereto, a driven shaft rotatable on said member, means actuated by the driven shaft adapted to carry and rotate an operating tool, a driven member rotatable with and longitudinally slidable on the driven shaft, means carried by said swinging member for adjusting the driven member longitudinally on the driven shaft, a rotary driving member adapted to be moved into and out of engagement with the driven member, the latter being radially adjustable toward and from the axis of the rotary driving member, manually operated means for moving the driving member in one direction, and means for automatically retracting the driving member.

6. In a mixing machine, a support, a swinging member pivoted thereto, a driven shaft rotatable on said member, means actuated by the driven shaft adapted to carry and rotate an operating tool, a driven member rotatable with and longitudinally slidable on the driven shaft, means carried by said swinging member for adjusting the driven member longitudinally on the driven shaft, a driving shaft rotatable on said swinging member and longitudinally slidable thereon toward and from the driven shaft, means for manually sliding the driving shaft in one direction, means for automatically retracting the driving shaft, and a driving member rotatable with the driving shaft and movable thereby into and out of driving engagement with the driven member, the latter being radially adjustable toward and from the axis of the driving member.

7. In a mixing machine, a support, a swinging member pivoted thereto, a driven shaft rotatable on said member, means actuated by the driven shaft adapted to carry and rotate an operating tool, a driven member rotatable with the driven shaft, a driving shaft rotatable on said swinging member and longitudinally slidable toward and from the driven shaft, a sleeve slidable longitudinally on the driving shaft, an abutment secured to the driving shaft, a spring engaging the sleeve and adapted to force the sleeve against said abutment, a cam carried by the swinging member, a cam lever adapted to engage said cam and secured to said sleeve for retracting the sleeve against the tension of said spring, and a driving member secured to said driving shaft and movable thereby into and out of driving engagement with said driven member.

In testimony whereof I have signed my name to this specification.

CHARLES T. ALEXANDER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

